: For modern HP LaserJet printers, the Jetdirect firmware is often included in a single .rfu or .bdl file that also contains the printer engine and paper handling accessory firmware.
Because the product is End-of-Life (EOL), the firmware is often removed from HP's main "Software and Drivers" search results. To find the firmware package (typically a .rfu or .exe file): hp jetdirect j8003e firmware